Pump



l. N. JOHNSTON.

PUMP.

APPLICATION FILED APR. 26, 1920,

1,369,527. Patented Feb. 22, 1921.

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I l Ilr 'I1/3 E IH 'l l, Il i' 5. 2; 121| 'd w 'p 24 Il zaza* n ll l; 3vl zx E fi Hu.. Ilab ,8 3l) INVENToR. w [mac IY. foiwop;

BY l y ATTORNEY.

VUNiTEu 'STATES ISAAC N. JOHNSTON, OF LOS ANGELES, CALIFORNIA.'

PUMP.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed April 26, 1920. Serial No. 376,683.

To all whom it may concern:

Be it known that I, ISAAC N. JOHNSTON, a citizen ofthe United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Pumps, of whichthe following is a specification. y

This invention relates to pumps or pump mechanism, and more particularly.to deep well pumps in which, water or other iuid is to be elevated bycentrifugal action, preferably through the operation of a runner orrunners operated in a pump bowl, and directing the water or Huidupwardly through a discharge pipe to a point of delivery. uch runner orrunners is or are ordinarily operated through a main shaft or driveshaft or pump shaft extending to the surface of the ground, and may beinclosed in a casing through which lubricant is supplied 'for thepurpose of lubricating the bearing or bearings of. the pump shaft andthe shaft eXtensions or adjuncts which operate the runner or runners.The invention pertains to that type of centrifugal deep well pump inwhich the lubricant is provided in and disposed of through the agency ofa circulatory system, which permits the used lubricant to`flow oninvention has for its object the provision of improved pump mechanismAof the general nature stated which will be superior in point ofrelative simplicity and inexpensiveness of the several features andelements pertaining to the accommodating andlubrication of the pumpshaft and its extension or extensions or adjunct or adjuncts for or ator within the pump proper or pump bowl or bowls taken in conjunctionwith superiority in durability, reliability, convenience in repair andsubstitution of worn parts,compactness in form, and maintenance offreecirculatory lubrication conditions, and which will be generally superiorin efHciency and service- With the above and other objects in view,

the invention consists in the novel and useful provision, formation,constructiomcombination, association and relative arrangement of parts,members and features? all as hereinafter described, shown in thedrawing, and finally pointed out in claims.

In the drawing:

Figure 1 vis a vertical central sectional yiew, partslbeing inelevation, of improvedl pump mechanism constructed and organized inaccordance with the invention;

Fig. 2 is a detail transverse sectional view of the same, taken upon theline a02-m2, Fig. 1, and looking in the direction of the appendedarrows; and

Fig. 3 is a similar view taken upon the line .aL-w3, Fig. 1y and lookingin the direction of the appended arrows.

Corresponding parts in all the figures are designated by the samereference characters.

Referring with` particularity to the drawing, A designates the bowl of apump runner B, such bowl being surmounted by a hollow casting C throughwhich the liquid is discharged by the runner B, in the directionindicated by a large arrow in Fig. 1, such casting C communicating withthe bowl A. Beneath the bowl A are hollow castings D, E and Fall'communicating with each other and with the bowl A and through whichthe fluid of the well is elevated in the operation of the runner. Thesecastings may be held Y together in any suitable manner and may bereadily disassembled or separated to permit access to the working partsof the pump mechanism.

It will be understood that any number of runners B, as desired andpracticable, may be employed, the same being mounted upon a concentrictubular runner shaft 4, and operatively coupled thereto to be rotatedthereby, by a gib key 5. 6 designatesa drive shaft adjunct or extensionprovided at itsupper end with screw threads 7 whereby it may be coupledto the main or pump shaft (not shown), as an extension thereof. 8designates the lower end of a concentric casing surrounding the upperportion of the shaft member 6, and spaced therefrom by an annularchamber 9 constituting part of the circulatory lubrication system andsupplied with lubricant through further lengths of .such concentriccasing 8 which are to be 'sleeve bearing 13 extending part way, from topto 'bottom of the tubing 10, and within this sleevel bearing the shaft 6is rotatably accommodated. Threaded. into the lower end of the tubing10, as at 14, is a further vertical sleeve bearing 15, which looselysurrounds the upper end of the hollow runner i sha-ft 4. The sleevebearing 13 preferably and above this spa-ce is provided an annular space17a surrounding the rotating shaft 6 beneath the sleeve bearing 13therefor. Lubricant may pass through these spaces into the spacebetweenthe hollow runner shaft bearing 15 and the hollow runner shaft 4, afterAsuch lubricant leaks out beneath the sleeve bearing 13. -Vithin thecasing E is provided a short tubing 18, supported concentrically thereinby webs 19, and pressed into and fitted tightly therein is a sleevebearing 20 within which rotates a short shaft 21 provided at its upperend with a threaded extension 22 threaded into the lower end of thehollow runner shaft 4, such shaft 21 having an annular shoulder oroff-set 23 below the extension 22 and having a relatively tight bearingfit upon'the upper end of an annular piston 24 .which surrounds theupper end of the sleeve bearing 20 and is free to play endwise within achamber 25 formed in the tubing 18 at its upper end, there beinglikewise accommodated in such chamber 25 a coil compression spring 26a'exerting its energy of compression upwardly against such annular piston24. A screw 26 set in the side of the tubing 18 extends at its inner endinto a recess 27 formed in the annular piston 24 and prevents the samefrom turning, While permitting itsaxial movement. Chambered in thisannular piston 24 is a piston ring 28 bearing against the outer wall ofthe chamber 25 above the screw '26. The tubing 18 is closed at its lowerend by a screw plug 29. A lubricant duct 30 Iis produced radially intothe shaft 6, to the axis thereof, and thence angular'ly downwardly insuch axis to communicate with the interioi of the `hollow runner shaft4. VThe upper end of this duct 30 opens out of the shaft within thesleeve bearing 13. A similar lubrication duct 31 is produced axiallydownward in the shaft 21 and then at right angles radially outwardwithin the interior of the sleeve bearing 20. Both of these ducts 30 and31 open into the ,hollow runner shaft 4 through the threaded extensions16 and 22 respectively." The sleeve bearing 2O preferably has a closeworking fit around the short Shaft 21.

spondingly, is or are operated by the pump shaft through the short shaft6 and the runner shaft 4, by suitable power mechanism which will beunderstood as located preferably at the surface ofthe ground. Thelubricant supplied to the inclosing casing 8 passes down between theshaft 6 and the sleeve bearing 13 and around the annular off-set orshoulder 17 into the space between the short sleeve bearing 15 and thehollow runner shaft 4. A certain portion of the lubricant passes outinto the bowl A through the open space 32 above the runnerB and betweenit and the` pump bowl abutment or guide 33 for directing the courseofthe elevated fluid. The centrifugal action produced in the operationof the runnerv B draws this lubricant out from the space 32 'and intothe stream or elevated fluid. A

portion of the lubricant passes down through the duct 30 and into thehollow runner shaft f 4 whence it passes through the duct 31'and maywork its way up .through the space between the short sleeve bearing 20and the shortshaft 21 and so out between the yieldingly mounted annularpiston 24 and the annular off-set 23, and thus out into the chamber inthe casting D, and be carried away by the ascending column of fluidbeing pumped. The compression of the spring 26a upon the annular piston24 serves to produce a substantially sand-tight joint between suchannularpiston 24 and the annular off-set 23, while at the same timepermitting a slight leakage and waste of used lubricant between sucholf-set 23 and such annular pistoni 24, thus maintaining a circulatorysystem to the very bottom of the operating parts of the pump mechanismand out into the ascending fluid. Thus all of the lubricant eventuallyfinds its way out into the ascending fluid, either above the runner Bthrough the annular space 32, or between the sleeve bearing 20 and theshort shaft 21 and under the annular offset 23 and over the annularpiston 24 and out around such annular enlargement 23 and between it andthe tubing 18 into the chamber in the casting D. By this circulatorylubrication system all of the Working and""bearing surfaces of the shaft6, the hollow runner shaft 4 and the shaft 21 are effectively served.The spent or depreciated drives suchrunner and includes the shaft 6,

- the hollow runner shaft 4 and the shaft 21.

If it be desired to replace or repair any of the parts of the pumpythebowl A and the l castings C, D, E and F may readily be separated and therepair or replacement made vin the field and without sendin the pump toa repair shop or a factory. Vhen the parts are disassembled a freshsleeve bearing 13 may be screwed into the casing 8, fresh shaftings 6and 21' may be screwed into the hol low runner shaft 4, a fresh sleevebearing 15 may be screwed into the tubing 10, or afresh sleeve bearing20 may be pressed into the tubing 18, and a new spring 26a and newannular piston 24 may be substituted for the corresponding parts, all asmay be required to maintain the pump in proper working condition. Itwill be understood, however, that the pump as organized is capable oflong continued operation without repair orA replacement, beingthoroughly and effectively lubricated by the circulatory system and in acirculatory manner, and by the means and features herein pointed out anddescribed.

It is obvious that various changes and modifications may be made inpractising the invention, without departing from the true spirit of theinvention, although widely.

varying from the particular construction and organization andcombination and interrelation and association of parts shown in thedrawing and heretofore described and set forth.

Having thus disclosed my invention, I claim and desire to secure byLetters Patent:

1. In' mechanism of the character dis.- closed, a pump bowl, an impellertherein, and operating means'for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, asleeve\bearing for the rotating shaft, and a bearing' for the hollowrunner shaft, there being a lubrication duct -provided in the rotatingshaft and extending from the surface thereof surrounded by the sleevebearing downward into the hollow runner slfaft.

2. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft;

there being a chambered pump casting above the pump bowl and separabletherefrom.

3. In mechanism of the character disclosed, al pump bowl, an impellertherein, and operating means for the impeller com- -prising a rotatingshaft, a hollow Arunner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownwardinto the hollow runner shaft; there being a chambered pumpcasting above the pump bowl and separable therefrom;

there .also being a chambered pump casting below the pump bowl, and abearing therein; the hollow runner shaft being provided with anextension rotatably mounted within said bearing in said lower pumpcasting.

4. In mechanism of the character disclosed, a pump bowl, an impellertherein,

and operating means forthe impeller comprising a rotating shaft, ahollow runner shaft upon which the impeller is fixed, a sleeve bearingfor the rotating shaft, and a bearing for the hollow runner shaft, therebeing a lubrication duct provided in the rotatingA shaft and extendingfrom the surface thereof surrounded by the sleeve bearing downward intothe hollowrunner shaft; there being a chambered pumpcasting above thepump bowl and separable therefrom; there also being a chambered pumpcasting below the pump bowl, and a bearing therein; the hollow runnershaft being provided with an extension rotatably mounted within saidbearing in said lower pump casting; there being further provided alubrication duct extending from ,said hollow runner shaft through saidhollow runner shaft extensionand to the bearing surface 'of said hollowrunner shaft extension within said bearing in the lower pump casting.

5. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller com- 'prising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a

sleeve bearing for the rotating shaft, and a bearing for the hollowrunner shaft, there being a lubrication duct provided in the rotatingshaft and extending from the surface thereof surrounded by the sleevebearing downward into the hollow krunner shaft; there being a chamberedpump casting above the pump bowl and separable therefrom; therealsobeing a chambered pump casting below the pump bowl, and a bearingtherein; the hollow runner shaft being providedwith an extensionrotatably mounted within said bearing in said lowerpump casting; therebeing further provided a lubrlcation duct extending from said hollowrunner shaft through said hollow runner shaft extension and tothebearing surface .of said hollow runner shaft extension within saidbearing inthe lower pump casting; said lower bearing being fitted with asleeve bearing for the hollow runner shaft extension.

6. In mechanism of the character disclosed, a pump bowl, an impellertherein,

below the pump bowl, and a bearing therein; the hollow runner shaft'being provided with an extension rotatably mounted within said bearingin said lower pump casting; there being further provided a lubricationduct extending from said y hollow runner shaft through said hollowrunner shaft extension and to the bearing surfaceofv said hollow runnershaft extension within said bearing in the lower pump casting; saidlower bearing being fitted-with a sleeve bearing for the hollow runnershaft extension; and there being further provided a yieldingly mountedannular piston surrounding said lower sleeve bearing. Y

7. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the .impeller comprising a rotatingshaft, a hollow runner.` 'shaft upon which the impeller is fixed, a

sleeve bearing for the rotating shaft, and a bearing` for the hollowrunner shaft, there being a lubrication duct provided in the rotatingshaft and extending from thesurface thereof surrounded by the sleevebearing downward into the hollow runner shaft; saidv rotating shaftbeing provided with an annular shoulder resting upon said hollow runnershaft, an annular lubricating passage being provided around said annularshoulder and communicating with the space between said hollow runnershaft and the bearing thereof.

8. In mechanism of the character d isclosed, a pump bowl, an impellerthereln, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft; said rotating shaft beingprovided with an annular shoulder resting upon said hollow runner shaft,an annular lubricating passage tween 'said hollow runner shaft and thebearing thereof; said rotating shaft having an extension threaded withinsaid hollow runner shaft.

-9. In mechanism of.' the character dis- A closed, a pump bowl, animpeller therein, and operating means for the impeller comprising arotating shaft, a hollow runner shaft upon which the impeller is fixed,a sleeve bearing for the rotating shaft, and| a bearing for the hollowrunner shaft, there being a lubrication duct provided in the rotatingshaft and extending from the surface thereof surrounded by the sleevebearing downward into the hollow runner shaft; said rotating shaft beingprovided with an annular shoulder resting .upon said hollow runnershaft, an annular 'lubricating passage being pro-vided around saidannular shoulder and communicating with the space between said hollowrunner shaft and the bearing thereof; said'rotating shaft having anextension threaded within said hollow runner shaft, and said annularshoulder bev ing formed upon said rotating shaft directly above saidthreaded extension thereof.

10. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatinglshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for` the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft; there being a close working fitbetween said sleeve bearing and said rotating shaft and a loose fitbetween said hollow'runner shaft and the bearing thereof.

11. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner closed, a pump bowl, an impeller therein,

and operating means for the impeller comprising a lrotating shaft, ahollow runner shaft upon which the impeller is fixed, a sleeve bearingfor the rotating shaft, and a bearing for the hollow runner shaft, therebeing a lubrication duct provided in the r0- tating shaft and extendingfrom the surface thereof surrounded by the sleeve bearing downward intothe hollow runner shaft; said hollow runner shaft being provided with anextension at the lower end thereof, and a bearing being provided forsaid extension, there being a lubricating duct formed in said extensionand extending from said hollow runner shaft' to the surface of saidextension within the bearing for said extension.

13. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided inthe rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownward into the hollow runner' shaft; said hollow runner shaft beingprovided with an extension at the lower end thereof, and a bearing beingprovided for said eX- tension; there being a lubricating",A duct formedin said extension and extending from said hollow runner sh-aft to thesurface of said extension within the bearing for said extension; saidlower extension of said hollow runner shaft being threaded into saidhollow runner shaft.

14. In mechanism of the character dis- 3 shaft upon which the impelleris xed, a-

sleeve bearing for the rotating shaft, and a bearing for the hollowrunner shaft, there being a lubrication duct provided in the rotatingshaft and extending from the surface thereof surrounded by the sleevebearlng downward into the hollow runner shaft; said hollow runner shaftbeing provided wlth an extension at the lower end thereof,

and a bearing being provided for said extension, there being alubricating duct formed in said extension and extending from said hollowrunner shaft to the surface of said extension within the bearing forsaid extension; there being an annular shoulder provided at the lowerend of said hollow runner shaft, and said lower vbearing beingsurrounded by an annular piston upon the upper end of which said annularshoulder bears.

15. In mechanism of the character disclosed, a pumpbowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being'surrounded by an annular piston upon the upper end ofwhich said annular shoulder bears; means being provided yieldinglyholding said annular piston against said annular shoulder at the lowerend 0f said hollow runner shaft.

16. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from lthe surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft said hollow runner shaft beingprovided with an exteansion at the lower end thereof, and a bearingbeing provided for said extension; there bein a lubricating duct formedin said extension and extending from said hollow runner shaft to thesurface of said extension within the bearing for said extension; therebeing an annular shoulder provided at the lower end of said hollowrunner shaft and said lower bearing being'surrounded by an annular istonupon the upper end of which sai annular shoulder bears; said annularpiston being provided with means preventing its rotation but'rpermitting its endwise movement.

17. In ,mechanism of the character disclosed, af' hollow runner shaft, atubular bearing support, a sleeve bearing within said bearing support,an extension of said hollow runner shaft at the lower end thereof andhaving a working lit within said sleeve bearing, and a lubricating ductcommunicat-` ing with said hollow runner shaft and extending throughsaid extension to the surface thereof in engagement with said sleevebearing.

18. In mechanism of the character disclosed, a hollow runner shaft, atubular bearing support, a sleeve bearing within said bearing support,anv extension of said hollow runner shaft at the lower end thereof andhaving a working fit within said sleeve bearing, and a lubricating ductcommunicating with said hollow runner shaft and exbearing, and alubricating duct communicating with said'hollow runner shaft andextending through said extension to the surface thereof in engagementwith said sleeve bearing; said extension being threaded into said hollowrunner shaft; there being an annular piston fitted within said tubularbearing support surrounding said sleeve bearing and capable of movementendwise 20. In mechanism of the character disclosed, a hollow runnershaft, a tubular bearing support, a sleeve bearing within said bearingsupport, an extension of said' hollow runner shaft at the lower endthereof and having a working fit within said `sleeve bearing, and alubricating duct communicating with said yhollow runner shaft andextending through said extension to the surface thereof in engagementwith said sleeve bearing; said extension being threaded into said hollowrunner shaft; there being an annular piston fitted within said tubularbearing support surrounding said sleeve bearing and capable of movementendwise thereof; means being provided exerting yielding -pressure uponsaid annular piston at one end thereof.

21. In mechanism of the character disclosed, a hollow runner shaft, atubular bearing support, a sleeve bearing within said bearing support,an extension of said hollow runner shaft at the lower end thereof andhaving a working fit within said sleeve bearing, and a lubricating ductcommunicating with said hollow runner shaft and extending through saidextension to ,the surface thereof-,in engagement with said sleevebearing; said extension being threaded into said hollow runner shaft;there bein an annular piston fitted within said tu u'lar bearing supportsurrounding said sleeve bearing and capable of movement endwise thereof;means being provided exerting yielding pressure upon said annular pistonat one end thereof; there being an annular shoulder provided at thelower end of said hollow runner shaft and bearing upon said annularpiston.

22. In mechanism of the character disclosed, a hollow runner shaft, atubular bearing support, a sleeve bearing within said bearing support,an extension of said hollow runner shaft at the lower end thereof andhaving a working fit within said sleeve bearing, and a lubricating ductcommunicating with said hollow runner shaft and extending 4' throughsaid extension to the surface thereof vin engagement with said sleevebearing; said extension being threaded into said hollow runner shaft;there being an annular piston fitted within said tubular bearing supportsurrounding saidF sleeve bearing and capable of movement endwisethereof; means vbeing provided exerting yielding pressure upon saidannular piston at one end thereof; there being an annular shoulderprovided at the lower end of said hollow runner shaft and bearing uponsaid annular piston; means being provided preventing rotation of saidannular piston but permitting endwise movement thereof.

23. In mechanism of the character disclosed, a hollow runner shaft, atubular bearing support, a sleeve bearing within said bearing support,an extension of saidhollow runner shaft at the lower end thereof andhaving a working fit within said sleeve bearing, and a lubricating ductcommunicating with said hollow runner shaft and extending through saidextension to the surface thereof in engagement with said sleeve bearing;said extension being threaded into said hollow runner shaft; there beinganl annular piston fitted within said tubular bearing supportsurrounding said sleeve bearing and capable of movement. endwisethereof; means being provided exerting yielding pressure upon saidannular piston at one end thereof; there being an annular shoulderprovided at the lowerv end of said hollow runner shaft and bearing uponsaid annular piston; said annular piston being provided with a pistonring fitting within said tubular bearing support.

24. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising'a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending fromlthe surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft; there being provided a casingsurrounding bearing for the hollow `-runner shaft, there in part therotating shaft; said sleeve bearing for said rotatingshaft beingthreaded within said casing. y

26. In mechanism of the character disclosed, a pump bowl, an impellertherein, and operating means for the impeller comprising a rotatingshaft, a hollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being a lubrication duct provided in the rotating shaft andextending from the surface thereof surrounded by the sleeve bearingdownward into the hollow runner shaft; there being a tubular bearingsupport for said sleeve bearing and said bearing for said hollow runnershaft being threaded to said tubular support.

27. In mechanism of the character disclosed, a pump barrel, an impellertherein, i

and operating means for the impeller comprising a rotating shaft, ahollow runner shaft upon which the impeller is fixed, a sleeve bearingfor the rotating shaft, and a bearing for the hollow runner shaft, therebeing a lubrication duct provided in the rotating shaft and, extendinfrom the sur-l face` thereof surrounded by` the sleeve bearing downwardinto the hollow runner shaft;

.there being a looseworking it between said hollow runner shaft and thebearing for said hollow runner shaft and a passage for lubricant beingprovided from the lower end of said sleeve bearing for said rotatingshaft to the space between said bearing for said hollow runner shaft andsaid hollow runner shaft.

2 8. In mechanism of the character disclosed, a pump bowl, an impellertherein,

cant being provided from the lower end of said sleeve bearing for saidrotating shaft to the space between said bearing for said hollow runnershaft and said hollow runner shaft; said space between said hollowrunner shaft and said hollow runner shaft bearing communicating with thepump bowl.

29. In mechanism of the character disclosed,l a pump bowl, .an impellertherein, and operating means for the impeller comprising a rotatingshaft, ahollow runner shaft upon which the impeller is fixed, a sleevebearing for the rotating shaft, and a bearing for the hollow runnershaft, there being alubricaton duct provided in the" rotating shaft andextending from the surface therein surrounded by the sleeve bearingdownward into the hollow runner shaft; there being a chambered pumpcasting above the pump bowl and separable therefrom; there also being achambered pump casting below the pump bowl, and a bearing therein; thehollow runner shaft being provided with an extension rotatably mountedwithin said bearing in said lower pump casting; said lower pump castingbeing separable from said pump bowl.

30. Mechanism of the character disclosed, comprising a pump bowl, ahollow shaft therein, an impeller upon the hollow shaft, a further uppershaft connected with the hollow shaft and a further lower shaftconnected with the hollow shaft.

31. Mechanism of the 'character disclosed, comprising a pump bowl, ahollow shaft therein, an impeller upon the hollow shaft, and furtherupper and lower shafts connected with the hollow shaft; there beingbearings provided for said upper and lower shafts and for said hollowshaft, and ducts being provided in said upper and lower shaftswhereby acirculatory lubrication system is provided to serve all of saidbearings.

32. Mechanism of the character disclosed, comprising a pump' bowl, ahollow shaft therein, an impeller upon the hollow shaft, and furtherupper and lower shafts convnected with the hollow shaft; there beingbearings provided for said upper and lower shafts and for said hollowshaft, and ductsv being provided in said upper and lower shafts wherebya circulatory lubrication system is provided to serve all of saidubearings; said upper and lower shafts being detachably connected withsaid hollow shaft.`

33. Mechanism of the character disclosed, comprising a pump bowl,r ahollow shaft therein, an impeller on the hollow shaft,

and further upper and lower shafts con-v 'nected with the hollow. shaft;there being bearings provided for said'upper and lower shafts, and ductsbeing provided in said 'upper and lower shafts whereby a circulaafurther lower shaft connected with the hollow shaft.

36. Mechanism Vof the character disclosed, comprising va pump bowl, ahollow Vshaft 5 therein, an impeller on the hollow shaft, and a furtherlower shaft connected with .the hollow shaft; there being -a hearingprovided for said further lower shaft, and a. duct being provided insaid lower shaft 10 whereby a circulatory system is providedv throughsaid hollow shaft and said further lower shaft.

In testimony whereof, I have signed my name to this specication in thepresence of two subscribing witnesses.

ISAAC N. JOHNSTON-- Witnesses:

RAYMOND IvEs BLAKESLEE, L. A. WAGNER.

